/*-
 * Copyright (c) 2014-2019 MongoDB, Inc.
 * Copyright (c) 2008-2014 WiredTiger, Inc.
 *	All rights reserved.
 *
 * See the file LICENSE for redistribution information.
 */

#include "wt_internal.h"

/*
 * __wt_connection_init --
 *     Structure initialization for a just-created WT_CONNECTION_IMPL handle.
 */
int
__wt_connection_init(WT_CONNECTION_IMPL *conn)
{
    WT_SESSION_IMPL *session;
    u_int i;

    session = conn->default_session;

    for (i = 0; i < WT_HASH_ARRAY_SIZE; i++) {
        TAILQ_INIT(&conn->dhhash[i]); /* Data handle hash lists */
        TAILQ_INIT(&conn->fhhash[i]); /* File handle hash lists */
    }

    TAILQ_INIT(&conn->dhqh);        /* Data handle list */
    TAILQ_INIT(&conn->dlhqh);       /* Library list */
    TAILQ_INIT(&conn->dsrcqh);      /* Data source list */
    TAILQ_INIT(&conn->fhqh);        /* File list */
    TAILQ_INIT(&conn->collqh);      /* Collator list */
    TAILQ_INIT(&conn->compqh);      /* Compressor list */
    TAILQ_INIT(&conn->encryptqh);   /* Encryptor list */
    TAILQ_INIT(&conn->extractorqh); /* Extractor list */

    TAILQ_INIT(&conn->lsmqh); /* WT_LSM_TREE list */

    /* Setup the LSM work queues. */
    TAILQ_INIT(&conn->lsm_manager.switchqh);
    TAILQ_INIT(&conn->lsm_manager.appqh);
    TAILQ_INIT(&conn->lsm_manager.managerqh);

    /* Random numbers. */
    __wt_random_init(&session->rnd);

    /* Configuration. */
    WT_RET(__wt_conn_config_init(session));

    /* Statistics. */
    WT_RET(__wt_stat_connection_init(session, conn));

    /* Spinlocks. */
    WT_RET(__wt_spin_init(session, &conn->api_lock, "api"));
    WT_SPIN_INIT_TRACKED(session, &conn->checkpoint_lock, checkpoint);
    WT_RET(__wt_spin_init(session, &conn->encryptor_lock, "encryptor"));
    WT_RET(__wt_spin_init(session, &conn->fh_lock, "file list"));
    WT_SPIN_INIT_TRACKED(session, &conn->metadata_lock, metadata);
    WT_RET(__wt_spin_init(session, &conn->reconfig_lock, "reconfigure"));
    WT_SPIN_INIT_SESSION_TRACKED(session, &conn->schema_lock, schema);
    WT_RET(__wt_spin_init(session, &conn->turtle_lock, "turtle file"));

    /* Read-write locks */
    WT_RWLOCK_INIT_SESSION_TRACKED(session, &conn->dhandle_lock, dhandle);
    WT_RET(__wt_rwlock_init(session, &conn->hot_backup_lock));
    WT_RWLOCK_INIT_TRACKED(session, &conn->table_lock, table);

    /* Setup serialization for the LSM manager queues. */
    WT_RET(__wt_spin_init(session, &conn->lsm_manager.app_lock, "LSM application queue lock"));
    WT_RET(__wt_spin_init(session, &conn->lsm_manager.manager_lock, "LSM manager queue lock"));
    WT_RET(__wt_spin_init(session, &conn->lsm_manager.switch_lock, "LSM switch queue lock"));
    WT_RET(__wt_cond_alloc(session, "LSM worker cond", &conn->lsm_manager.work_cond));

    /* Initialize the generation manager. */
    __wt_gen_init(session);

    /*
     * Block manager. XXX If there's ever a second block manager, we'll want to make this more
     * opaque, but for now this is simpler.
     */
    WT_RET(__wt_spin_init(session, &conn->block_lock, "block manager"));
    for (i = 0; i < WT_HASH_ARRAY_SIZE; i++)
        TAILQ_INIT(&conn->blockhash[i]); /* Block handle hash lists */
    TAILQ_INIT(&conn->blockqh);          /* Block manager list */

    return (0);
}

/*
 * __wt_connection_destroy --
 *     Destroy the connection's underlying WT_CONNECTION_IMPL structure.
 */
void
__wt_connection_destroy(WT_CONNECTION_IMPL *conn)
{
    WT_SESSION_IMPL *session;

    /* Check there's something to destroy. */
    if (conn == NULL)
        return;

    session = conn->default_session;

    /* Remove from the list of connections. */
    __wt_spin_lock(session, &__wt_process.spinlock);
    TAILQ_REMOVE(&__wt_process.connqh, conn, q);
    __wt_spin_unlock(session, &__wt_process.spinlock);

    /* Configuration */
    __wt_conn_config_discard(session); /* configuration */

    __wt_conn_foc_discard(session); /* free-on-close */

    __wt_spin_destroy(session, &conn->api_lock);
    __wt_spin_destroy(session, &conn->block_lock);
    __wt_spin_destroy(session, &conn->checkpoint_lock);
    __wt_rwlock_destroy(session, &conn->dhandle_lock);
    __wt_spin_destroy(session, &conn->encryptor_lock);
    __wt_spin_destroy(session, &conn->fh_lock);
    __wt_rwlock_destroy(session, &conn->hot_backup_lock);
    __wt_spin_destroy(session, &conn->metadata_lock);
    __wt_spin_destroy(session, &conn->reconfig_lock);
    __wt_spin_destroy(session, &conn->schema_lock);
    __wt_rwlock_destroy(session, &conn->table_lock);
    __wt_spin_destroy(session, &conn->turtle_lock);

    /* Free LSM serialization resources. */
    __wt_spin_destroy(session, &conn->lsm_manager.switch_lock);
    __wt_spin_destroy(session, &conn->lsm_manager.app_lock);
    __wt_spin_destroy(session, &conn->lsm_manager.manager_lock);
    __wt_cond_destroy(session, &conn->lsm_manager.work_cond);

    /* Free allocated memory. */
    __wt_free(session, conn->cfg);
    __wt_free(session, conn->debug_ckpt);
    __wt_free(session, conn->error_prefix);
    __wt_free(session, conn->home);
    __wt_free(session, conn->sessions);
    __wt_stat_connection_discard(session, conn);

    __wt_free(NULL, conn);
}
